Means for preventing sag and protecting bearings of platform weighing scales



1,639 829 927 M. H. WINSLOW MEANS FOR PREVENTING SAG AND PROTECTINGBEARINGS 0F PLATFORM WEIGHING SCALES Filed Jan. 19, 1926 3 Sheets-Sheet1 I'hve n 1 0 r l Marion 11. m slow- V fliio rrgey's v M I @t 9 3. 4 2 aE: \l. n W r. Mm fix M3 s Q A M WUMM W w I T, s Np l H. WINSLOW FiledJan. 19, 1926 OF PLATFORM WEIGHING SCALES MEANS FOR PRE ENTING SAG ANDPROTECTING BEARINGS Marlon H. W

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Am way Patented Aug. 23, 1927.

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TERZRE HAUTE'; INDIANAQ MEANS FOR PREVENTING SAG AND rnomnecrme BEARINGSor 'PLNEFORJME:Wi1."IGPIILNiJ:i I 1 SCALES; I

Application 111661 January: 19, 1926... Serial; No. 82,206;

The object of this invention is to prevent the saggii'ig of Weighbridge} girders ofre l-j' Way and other platform Weighing SCaleS" Whenthe platform is subjected'to a loader .usewhile not being usedfoi-weighin'gl;

As railway and like scales have been here tofore built and employed, ithas been'necessary' to: employ at double trackorsicle track or dead railequipment for the'loco notive'to lo run on in. its'workat other timesthanjwlien the scale is being" used to weigh. Thisisto," prevent thetravel backantl forth ofl ocomo tives and trains froin'runnin'gover thescales" and injuring them, or causingitheir irders Ito sag under suchheavy trefiicfi Thnswhen the dead rail'equiplnenflis employed it isnecessary to stopthe train fonr'tiines toget over the scale.

The above'objectionable featmes are-avoided by this invention'so thatitrentlers' the sicletra'ck unnecessary and also ar-dead rail equipmentand saves stoppi'ng the treintfour times" to getover thescalensingthecleed rail equipment; it-h this invention -.th*- scale is arrangedso. that the' locomotive "01" train can go back and forth in-switching-or? for any other purpose; running "over the scales, Withoutany injury to them Hence" only one trac k is necessary and no dead raileqniplnentreqnirecl. w 1 V The chief feature" of the 1 invention consists in-providing a Wedging I or blocking mechanism for Wedgingf up thebridge' gircl er's while the scales are not "being need for Weighingpurposes so the-t they will with sta'nch the ve'igllt end usage foflocomotive tra'flic i Withoutinjnr i ng the scales" i i In other word'sin such I use the larger part of thefload coines on the wed ingmblocking mechanism instead of on "the knife edge bearings of}the'scaleik 1 The full nature 'of the invention 1 'Wlll be understoodfronwthe accompanying dravv ings" and the fellowing description andcla-imsl't- I In them-wings:

Figure lis a plan View of a railway track provided with a two 'sectionrailway plat forln scale; parts being shown by dotted linesVanclYpart's broken away; FigJ'Q is a cross: section-on the line"2 2 of1 With the: uppenpart ofthe' scale brokeneway and trackegeoinittecl;Fig. 3 is e'transverse' vertical section througlrtheclevice'lonthe linetherefore is 'not liniited' tioEn,endth'eloetd'receive lb'ji:tlie'crossheai sf scale, asis 3+3: ofFig. 1, parts. being; broken,ewey Fig 4 isaverticalflsectionIon thelin'e of Fig; 2, throu ha'portion of the "mech'ainifSlfh, 'QIlan enlzirg'ed scale, parts" beingbroken away, showing iineans for jgui'ding fa. Wedge; Fig. 5isaplanvievvbf theweagmg niechinisn end" SCZLl f franie' with the wefgh:ing 'elelnentsfof the scale joinittetl for 016121 ne's's Fig. 6' is alongitudinal vertical section scaletshovvn; Fig. 7 is a plan .viewof'onei ofQ the Wedges; Fig? 8"isfa side vi'e\v"ofseid, Wedge; and Fig.9 is a vertical section on? the line 9"9 OfFi'g it Thi'sinventioncanbejused'in coinhinlti'on Withvarious kind'sofple v to thepafrti'ciilztr railvvaytscale herein shoivil; To illustrate" theinventionQllowever, in" the emin s herein thel'e'areshoivn sections'of'a railway track 10'with a ireilw'e'y scale"therein heviiiglongitudinal. rails'llon cro ss ties"l2 so 'es to make an'continnousrailway trtck on which? locomotives and "trainsjcanftre velfor any 1 purpose; While the scale isn'ot -'beingffuseclforvveighingoncen be stOppedonthescale go for we i p p es v, e xTherefis a scele pit fasTshoWn 'in Figsiil and 3,1f0rnid byce'lnent.tvallflg 'zintl hot-f tom 14. There are alsopil'astei'brioesjliif asshov'vnfin Figzye;imwraemg the cement/ Walls}At'each ientl10fthepitftherens a transverse pillow block 16f entlf 011'each jof? themfismonn'ted a pair o bee 1mg; blocks 17 for mounting thecross be eins' 1 8' ini'th i? usual or any desiiedf'mztnner of "constru'i 18 is 'trans'lnfittedfbyftheni to long flongitn dintlbeamsKQffnlCTii'InetI nearfea'cl1 ei1'tl of the pit at 20 fundextending- Pin/j alinenient' with each otlientovvarfd the inicldl'e "ofthe D5 hown in Fig.6, Whereithey trans? nit the load to the transverse,centril weigh 111g beam 21 which, .at its outer end, is con- I nectedbynieansnot "Shown to the iisnztlscztle" beams above, whereby"theweight'of the load is indicated.' The-transverse bevzi'ms 1831c; ceive thefloadf through two pairs of ibrid s} girders22, esshovvnin Fig.3; Thesegird ers' are" heavy 'I-beains' and, each pair" is' se cured togetherbyj plates .28, and the "two 10 pairs are secured. together {andb'recedbv channel "irons;- Q LQ-asf seen infFigslg l en cl Y6. Thismakes an extremely'strong'end he'a' vy tforin scalesfand bridgestructure on which the cross ties 12 are laid transversely of the track,as seen in Figs. 3 and 6, and on them the rails 11 are laid and alsosuitable flooring 25.

The foregoing constitutes the main elements of the weighing scaleconstruction, but it is to be understood that each beam 18, 19 and 20 ismounted with the usual knife edge bearing construction, details of whichare not herein presented. To this construction or any other similarplatform weighing scale construction I have added means readilyoperative for temporarily assuming the weight of the girder frame andload and taking their weight off of the knife edge bearings and supportthem in absolutely unchangeable position so as not only to relieve theknife edge bearings, but to prevent the sagging of the girders when thescale or track is used for other purposes than weighing.

The newly added features are the following:

In the pit at intervals I provide pairs of pillow blocks and 31. Thereare eight of these in the construction shown, two at each end beingupward steps from pillow blocks 16 and two pairs near the middle. Onthese I secure bottom bearing blocks 32 in pairs under the girders 22,as shown in Figs. 3, 4 and 6. They taper upward and their upper ends arebeveled substantially.

as shown in Fig. 2, and extend almost to the bottom of the girders 22.Above each bottom bearing block 32 I provide an upper bearing block 33,as seen in Fig. 2, that extends transversely of the bottom bearing block32 and transversely of the girders 22 and immediately under themand itis secured to and held in place by the girders through theinstrumentality of. a cross bar 34; that lies on the lower flanges ofthe girders 22, as shown in Fig. 9. Bolts 35 extend through the bar 34andthroug'h the lateral portions of the upper bearing block 33, as seenin Figs. 4 and 9. When these bolts are tightened up the upper bearingblocks 33 will be simultaneously secured to the bottom of the girdersand immediately from the bottom bearing blocks 32. In the constructionshown thereare eight of these, but the number may be varied according tothe size of the scale construction.

Between each bottom bearing block 32 and top bearing block 33 a wedgeblock 36 is introduced, as seen in Figs. 2 and 4. shape of the wedge isshown by the plan view in Fig. 7 and the side view in Fig. 8. It extendshorizontally between said top and bottom bearing blocks and along itsupper edges it has laterally extending flanges 37 that cooperate withthe guide bolts 38 extending through downwardly extending flanges 39from the top bearing block 33,

The

as seen in Fig. 4. These bolts 33 are to guide the longitudinal movementof the wedge and hold it in place between the boaring blocks and preventits escape. Each pair of wedges is operated by the toggle constructionshown in Fig. 2. Thus each wedge has an upwardly turned end having two4L0 for pivoting the screw bolts 41 that project into the turn-buckle 42and in the other end of the turn-buckle there is another screw bolt 4:3pivot-ed to one end of a crank arm a l or half piece extending from thecrank arm cap 45. This construction. for each wedge is identical and thetwo crank arm caps L5 for the two wedge operating constructions areclamped by bolts 46 tightly to a shaft 47 and keyed by keys 48 so thatwhen the shaft is turned in one direction it will push the wedge blockstightly in between the top and bottom blocks 32 and 33, as shown in Fig.2, and when the shaft 47 is reversed it will pull out those wedge blocksto some extent. The shaft 457 extends for the full length of the scale,as seen in Figs. 1 and 5, so that. it will operate. all of the wedgeblocks 36 simultaneously alike. The shaft 47 is oscillated by aconnecting rod 50, as seen in Fi 3. that at its inner end is connectedto an arm 51 on said shaft and at its other end is pivotet to the lowerend of a hand. lever fulcrumed at 53 in a frame 5% mounted on a pair ofI-beams 55 which are bolted to the bottom of the girders 32. The handlever 52 is locked in position by a spring actuated pawl 56 and a rack57.

The operation of the wedging mechanism is as follows:

\Vhen the scales are being used for weighing the hand lever 52 is pushedinward which will pull out the wedge blocks 36 to some extent so thatthe weight of the girders and load will come down upon the knife edgebearings of the weighing beams and the parts operate as a scale inweighing.

lVhen the scale is not being used and there is no load on the scale, thetop of the hand lever 52 is moved outwardly which will tend tostraighten the toggle mechanism, as shown in Fig. 2, and force thewedges in between the top and bottom bearings 33 and tightly and thuscause the girders and trackage on them to be wholly supported for thetime being by the bottom bearing blocks 32 and the knife edge bearingsthen will be freed from the support of the load or girders. lVhile inthat condition locomotives and trains can run across the scales forswitching or any other purpose and the girders cannot sag nor will theknife edge bearings be injured thereby. hen again it is desired toweigh, the bearing blocks 36 are withdrawn somewhat so as to let theknife edge bearings receive the Weight of the load.

block.

With this construction no double trackage or dead rail equipment isrequired and it becomes unnecessary to stop the train four times to getover the scale using dead rails.

One movement of the hand lever 52 operates all the wedge blocks 36simultaneously and equally. The invention, however, is not limited tothe particular means shown for operating the wedge blocks as they mightbe operated by other means that would occur to an engineer. 7

I claim as my invention:

1. The combination with the girdersof a latform weighing scale, ofbottom bearing blocks under said girders, top bearing blocks abovethebottom bearing blocks and in position to support thegirders, and aWedge block adapted to be driven in between each set of top and bottombearing blocks and released therefrom, ea'ch top bearing block having alongitudinal chamber in its underside for receiving, guiding. andholding the wedge block 1n place on the bottom bearing 2. Thecombination with the girders of a platform weighing scale, of bottombearing blocks under said girders, top bearing blocks above the bottombearing blocks and in position to support the girders, a'wedge blockadapted to be driven in between each set of top and bottom bearingblocks and released therefrom, each top bearing block having a: chamberin its underside to receive the wedge block, and means associated withthe top bearing block for uiding the wedge block and holding it in thetop bearing block during adjustment and use.

3. The combination with the girders of a platform weighing scale, ofbottom bearing blocks under said girders, top bearing blocks above thebottom bearing blocks and in position to support the girders, awedgeblock" adapted to be driven in between each setof top and bottom bearingblocks and released therefrom, the top bearing block having a wedgeblock adapted to be driven in between each set of top and bottom bearingblocks and released therefrom, the bottom bearing block having its upperend sloping downward from the central portion thereof so that the wedgeblock will rest principal- 1y upon the central part, of the top of thebottom bearing block.

In witness whereof, I have hereunto affixed my signature.

MARLON H."WINSL1OIW.

